Speed Control of Permanent Magnet Synchronous Motor Based on Improved FO[PI] Algorithm

The permanent magnet synchronous motor (PMSM) is a multi-variable, strongly coupled nonlinear system that is sensitive to load and parameter perturbations. How to improve the traditional double closed-loop PID control speed regulation performance is extremely important and necessary. This paper considers speed control of PMSM. Firstly, an improved fractional-order [proportional-integral] (FO[PI]) controller is proposed. Secondly, an improved variable fractional-order sparrow search algorithm is presented and applied to solve this controller parameters optimization problem. Finally, the new algorithm is compared with PI and FOPID, the simulation results show that the proposed controller in this paper has better real-time performance and anti-interference capability.